Packing-ring.



No. 793,463. PATENTED JUNE 27, 1905.

J. J. MODONALD. PACKING RING.

APPLIOATION FILED MAR. 21, 1905.

WITNESSES:

% M BY I Patented June 27, 1905.

PATENT OFFICE.

JAMES J. MCDONALD, OF NEW YORK, N. Y.

PACKING-RING.

SPECIFICATION forming part of Letters Patent No. 793,463, dated June 27, 1905.

Application filed March 21, 1905. Serial No. 251,229.

To (all whom it may concern:

Be it known that I, JAMES J. MCDONALD, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Packing-Ring, of which the following is a full, clear, and exact description.

This invention relates to improvements in packing-rings particularly adapted for forming a tight and waterproof connection beneath the base of a closet-bowl and a flooring, although it may be used for packing cylinder-heads or the like, the object being to provide a packing-ring that will be strong and durable and retain a suitable plasticity.

I will describe a packing-ring embodying my invention and then point out the novel features in the appended claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure I shows in plan a packing-ring embodying my invention. Fig. 2 is a section on the line :0 m of Fig. 1; and Fig. 3 is a fragmentary section similar to Fig. 2, but drawn on a larger scale.

Referring to the drawings, 1 designates the packing-ring molded or otherwise formed and consisting of asbestos. The ring is made V- shaped in cross-section, as I find this form to be preferable to a fiat packing, because it more readily yields to pressure and forms a tight joint. After molding or otherwise forming the ring of asbestos it is boiled in or treated to a hot bath of a plastic lilling such, for instance, .as paraffin. This. causes the ring to retain its plasticity, and as the paraffin fills all the pores of the asbestos it also makes the ring practically waterproof. This filling of paraflin is indicated by dots or stippling 2.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- A packing-ring consisting of asbestos, V- shaped in cross-section, and a plastic filling therein.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

G. -R. FERGUsoN, EVERARD BOLTON MARSHALL. 

